This would not be a reason for me to get a smartphone, as much as I would love to have a really good reason to get one.
Because when I have the time to play a game of go, I usually also have access to a laptop or PC, with a better playing experience because of a large display, mouse and keyboard.
Also when I am commuting between home and my workplace, I will not have enough time for a whole game. I would have time, however, to play up to a few moves in my turn based games.
So I am wondering why the focus of those mobile clients has mainly been connecting to online and not turn based servers. Surely those normally have a HTML interface and so they can be played on via the mobile's browser. However, when I tried this for OGS, I was not satisfied. Zooming in, zooming out, placing a stone - those can become painful if not optimized nicely.
Other features that would be nice to have:
- An interface to a database of professional game records that can be searched directly from the played game by selecting a search area.
- Access to a joseki database. This could be just any other application running in a parallel task, though.
- Score estimator
I saw that Mdobbins has developed an Adroid client for DGS. Maybe someone can share his experiences with that. (A YouTube video would be really nice.